Sprinkler



Feb. 24,1931; Q TE GROEN ET AL 1,794,013

SPRINKLER Filed Oct. 16, 1929 A TTORNE Y.

Patented Feb. 24, 1931 UNITEDSTATES PATENT OFFICE GERARD TE GROEN AND PETER W. TE GROEN, OF` LONG BEACH, CALIFORNIA srmNxLEn Application led` October 16, `1929. Seria1\No.`400,022.

This invention relates to a sprinkler adapted for use either in automatic sprinkler systemsor for a sprinkler of the portable type.

An objectof the invention is to provide a sprinkler head having a spray regulating attachment which in certain respects is an improvement upon other devices of its class with respect to simplicity of construction, 10 durability and convenience of adjustment for the purpose of regulating the size and shape of the spraying orifice.

A further object of the invention is to provide improved means for preventing the 1'5 sprinkler from becoming clogged with earth, grass blades or the like.

Other objects and advantages may here` `inafter appear. n Referring to theaccompanying drawings, o which illustrate what is at present deemed to be Va preferred embodiment of the invention, i y y Fig. l is a vertical mid-section of the device. i i

Fig. 2 is a transverse section on line 2-2 of Fig. 1.

Fig. 3 is a mid-seetionalview of a modification of the upper portion of the casing of the sprinkler head, part of the valve being shown in side elevation.

Figgll is a modified mid-sectional view of the device.

Referring in detail to the drawings, the casing 5 of the sprinkler head is ot a hollow spherical character and is provided at its lower end with an y internally threaded shank 6 which is screwed on to the tubular supply conduit 7 Said supply conduit 7 may be one of thestand pipes of an automatic sprinkler system, or may be connected with a portable base `(not shown) such'as is commonly used as a means for connecting a garden hose with a sprinkler head. 45 Said sprinkler head 5 is provided with 1nternally projecting spiral ribs or webs`8,`

four of such ribs being shown in the illustrated embodiment of the invention. Said webs 8 are joined at their inner edges to a m central body 9, which has a vertical bore 1() extending therethrough, The body, ribs and casing of thesprinkler head are all preterably formed as integral parts of a single casting. v

Through the vertical bore 10 extends a valve stem 12 provided at its upper end with a valve head 13 to regulate the size of the spraying orifice 14. The lower portion of valve stem 12is screw threaded to receive a nut 15, and the upper side of the valve head The nut 15 should be made to screw upon the threaded portion of stein 12 as tightly as i is consistent with convenient rotation ofthe valve stem by means of a screw-driver or like tool. i i

y On all sides of the body 9 there is located between the ribs 8 an upwardly tapered annular space, saidbody 9 `forming the inner wall of said space and the casing` forming the outer Wall thereof. This space 21 co1nmunicates at its upper end around the valve stern 12 with the nozzle orifice `14. The lower side of the valve head 13 is provided with a downwardly extending broadly conical swell or projection 22 on all sides of the valve stem, said valve stern being located centrally of the spraying orifice 1li and the spraying oriice being tapered from without inwardly, thus `providing for the `nozzle a discharge passage` which is continuously` contracted from its intake end to its discharge end. The valvefhead `13 `termed as a horizontal disc the diameter of `which is su'licient to reach slightly beyond the annular bosser shoul der 23 which bounds the spraying ori tice.

In Fig. 3 is shown a modification wherein the sprinkler head is provided with a semicircular' spraying orifice 25 which is well adaptedftor use in sprinklers of the automatic system type wherein a row of sprinklersare located at the edge of a lawn and are constructed and arranged to discharge their spray from one Side only, the other side being closed at 35. Y Y Y The annular shoulder 23 which, in both forms of the invention, is'provided around the outer edge of the delivery orifice, safeguards saidforiice. from becoming clogged with dirt when the device is installed near the surface of the ground as part of an auto;

matic sprinkling system. Y

In the operation of the device the spiral ribs or webs 8 will impart a whirling nio-vement to the stream of liquid issuing from the nozzle, the speed of the stream being uni-i ormly accelerated by the vcontinuously tapering character of the annular discharge passage considered as a who-le. In Fig. 1` the valve head isshown adjusted to deliver a relatively large stream which will issue from the discharge orice at a considerable angle above horizontal7 and-by screwing down the v alve head and stem the stream will be delivered'in a more horizontal manner. The sizeof the stream will not be lessened,

n however, untilv the crossrseetionalarea between the annular shoulder 23 and the lower side of the head of the valve becomes less than the cross-sectional area of the annular K space between the valvestem 12' and theV inner A uedge of the spraying orifice 14. Claims: v- .Y 1; A. sprinkler head Comprising a hollow body having: internally projecting webs,l a central internal body supported by said webs l* and'having a tapered discharged passage therearound, there being a hole through said f ,35. -body, a valve head to control the flow of liquid through said passage9 said valve head Y having a stem extending through said; hole,a 40 nut. screwing onto said stem,l and lugsv prof# u liecting from said body to prevent said. nut from rotating during the Vadjustment of said valve stem by rotation'thereof. y 2'. A sprinklerhead comprising a hollow body having internally.projectingv webs, a y

central internal body supported by said webs i andhavin'g a` tapered discharged passage rtherearound, there being a hole through said body, a valve head to controlthe flow ofY -.i liquid, through said passage, said valve head having: a stem lextending through'said hole, atnut screwing onto. said stem, and meansin iiXedrelation to the sprinklerl head to prev Y Y vent said nut froinrotating during'the adjust.-

J mentor saidvalvev stem by Yrotation thereof; In testimony whereof we hereuntoax our 'f signatures y Y l l y "GERARD 'rE GROEN. l

lPETER TE Y* 

